Study on the eutectic and post-eutectic reactions in LM13 aluminum alloy using cooling curve thermal analysis technique

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• 作者：V. A. Hosseini ; S. G. Shabestari
• 关键词：Cooling rate ; Solid fraction ; Thermal analysis ; Intermetallic compounds ; Mechanical property
• 刊名：Journal of Thermal Analysis and Calorimetry
• 出版年：2016
• 出版时间：May 2016
• 年：2016
• 卷：124
• 期：2
• 页码：611-617
• 全文大小：2,136 KB
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• 作者单位：V. A. Hosseini (1) (2)
  S. G. Shabestari (3)
  
  1. Department of Engineering Science, University West, 461 86, Trollhättan, Sweden
  2. Innovatum AB, 461 29, Trollhättan, Sweden
  3. Center of Excellence for High Strength Alloys Technology (CEHSAT), School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Narmak, Tehran, Iran
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Sciences
  Polymer Sciences
  Physical Chemistry
  Inorganic Chemistry
  Measurement Science and Instrumentation
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1572-8943

文摘

Effect of non-equilibrium solidification conditions on the eutectic and post-eutectic reactions temperature and percentage of the phases were investigated using computer-aided cooling curve thermal analysis. In addition, hardness, secondary dendrite arm spacing, and maximum pore size were studied at different cooling conditions. Cooling curves were determined by setting thermocouples in the center of the molds. Solid fractions were calculated by Newtonian baseline technique. Results showed that increasing the cooling rate shifted the temperature of post-eutectic reaction upward, except final reaction. Higher cooling rate increased eutectic percentage about 4 %, but reduced total percentage of post-eutectic phases. Additionally, increasing the cooling rate shortened the maximum porosity diameter and secondary dendrite arm spacing and increased the hardness of the alloy.